Finding the Third Proportional to 778,209 and 1,428,546

Step by Step Solution

1. Step 1: Write the proportion equation
   778,209 : 1,428,546 = 1,428,546 : x
2. Step 2: Convert to fraction form
   778,209/1,428,546 = 1,428,546/x
3. Step 3: Cross multiply
   778,209x = 1,428,546 × 1,428,546
4. Step 4: Simplify right side
   778,209x = 2,040,743,674,116
5. Step 5: Solve for x
   x = 2,040,743,674,116/778,209
6. Step 6: Final answer
   x = 2,622,359.38